完成端口实现UDP通信问题，请拔刀，谢谢

Question

iocp udp  在获得完成端口状态后，试用readfile能够得到数据，但是无法获取发送数据段IP地址，而且效率不高，顾使用WSARecvFrom， 
int ret =WSARecvFrom(pServer->g_hSocket,                   
&(DataBuff),                            
         1,                                               
&(recnum),                                  
&lpFlags,                                                           
(SOCKADDR*) & (remoteAddr),                                
&(remoteAddrLen),                
&(Overlapped),                                
NULL);   
但是返回错误代码10045，WSAENOTSUPPORT 请问如何解决，谢谢！

Answer 1

使用参数定义：
WSABUF DataBuff;
DataBuff.len = 1024;
DataBuff.buf = ReadBuffer;unsigned long recnum = 1024;SOCKADDR_IN remoteAddr;int remoteAddrLen = sizeof(remoteAddr);OVERLAPPED Overlapped;
Overlapped.hEvent =pServer->g_hReadEvent;
Overlapped.Offset =0;
Overlapped.OffsetHigh =0;
Overlapped.Internal =0;
Overlapped.InternalHigh =0;

Answer 2

使用readfile读完数据后，使用Getpeername 也不行我真的没分，会的高手义务奉献一下好么？ 你会万福的！

Answer 3

UDP使用IOCP完全没有效率上的意义。